FIELD: construction.
SUBSTANCE: invention relates to the field of construction and can be used as rod and beam elements in the development of bearing structures of buildings and structures for various purposes. In a zeta (Z-shaped) equal-flange profile with a wall inclined to parallel flanges at an acute angle, the ratio of dimensions of its width and height along the middle line of section is 1/6.031 and 2.332/1 with equal stability from the plane and in the plane of the structure, 1/2.071 at maximum rigidity, minimum flexibility, 1/4.008 at maximum strength.
EFFECT: wider field of its rational application.
1 cl, 4 dwg
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